Article
Chemistry, Applied
Yuan Pan, Hui-Wen Gu, Yi Lv, Xiao-Li Yin, Ying Chen, Wanjun Long, Haiyan Fu, Yuanbin She
Summary: This study established an UPLC-QTOF-MS-based untargeted metabolomic approach to discriminate the geographical origins of Chinese red wines. Significant differences were observed between wine samples from different regions in China. The identified markers successfully discriminated external validation wine samples with a recognition rate of up to 96.7%.
Article
Food Science & Technology
Zhanming Li, Mengmeng Tan, Huxue Deng, Xu Yang, Yue Yu, Dongren Zhou, Hao Dong
Summary: In this study, non-targeted metabolomics technology was used to trace rice samples and identified significant differences in rice metabolites from different origins. The study also determined the main metabolic pathways and signal transduction pathways associated with differential metabolites in rice. This research provides important insights for improving rice quality control.
Article
Chemistry, Applied
Youyuan Lu, Guangda Yao, Xuan Wang, Yang Zhang, Jianjun Zhao, Yong-Jie Yu, Hanqing Wang
Summary: This study presented a comprehensive strategy for investigating the quality of licorice using untargeted metabolomics and chemometric methods. Significant differences in metabolites among licorice samples were identified, and geographical discrimination models successfully distinguished the origin of licorice samples.
Article
Chemistry, Applied
Araceli Rivera-Perez, Roberto Romero-Gonzalez, Antonia Garrido Frenich
Summary: This study successfully differentiated black pepper samples based on their geographical origin and quality processing using H-1 NMR spectroscopy and chemometrics. PCA and OPLS-DA analysis resulted in high goodness-of-fit and predictive ability models, and identified major chemical markers in black pepper.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2022)
Article
Chemistry, Applied
Spiros A. Drivelos, Georgios P. Danezis, Michal Halagarda, Stanislaw Popek, Constantinos A. Georgiou
Summary: This study analyzed the rare earth and trace element content of 93 honeys of different botanical types and origins using ICP-MS. Discriminant Analysis was successful in classifying both botanical type and geographical origin, while Cluster Analysis only worked for botanical type. Probabilistic Neural Network analysis correctly classified 85.3% of samples based on geographical origin and 73.3% based on organic characterization. A Partial Least Squares model was constructed with a prediction accuracy of over 95%, using information from rare earths and trace elements for classification of honey samples.
Article
Food Science & Technology
Jiashun Fu, Hai-Dong Yu, Long Wu, Chenghui Zhang, Yong-Huan Yun, Weimin Zhang
Summary: By using stable isotope and targeted metabolomics combined with chemometrics, it is possible to accurately identify partridge tea from different origins based on the differences in stable isotope ratios and chemical components. The study demonstrates that stable isotope ratios and polyphenol and alkaloid contents can serve as key indicators for classifying and identifying the origin of partridge tea.
Review
Chemistry, Applied
Haroon Elrasheid Tahir, Muhammad Arslan, Gustav Komla Mahunu, Abdalbasit Adam Mariod, Sulafa B. H. Hashim, Zou Xiaobo, Shi Jiyong, Hesham R. El-Seedi, Taha H. Musa
Summary: The global market for imported, high-quality priced foods has grown significantly in the past decade, leading to a stronger demand for accurate origin labeling of food products. This review discusses the efforts made in using analytical tools and multivariate analysis for the verification of the geographical origin of oils, as well as trends in geographical authentication research and preferred journals for dissemination. Overall, this article provides a useful guideline for the food industry and quality control authorities in selecting appropriate methods for authenticating oils.
Article
Chemistry, Applied
Guillem Campmajo, Luis R. Rodriguez-Javier, Javier Saurina, Oscar Nunez
Summary: This study proposed using high-performance liquid chromatography with fluorescence detection (HPLC-FLD) fingerprints as chemical markers to classify paprika from five European regions, achieving an excellent classification accuracy of 97.9%. Additionally, chromatographic fingerprints were successfully used to detect and quantify different paprika geographical origin blend scenarios, with low external validation and prediction errors.
Article
Chemistry, Applied
Si Mi, Yuhang Wang, Xiangnan Zhang, Yaxin Sang, Xianghong Wang
Summary: Chemical analysis combined with chemometrics can be used to authenticate the geographical origins of sesame seeds, and discrimination models can be established with high correction rate.
Article
Chemistry, Applied
Michele Ghidotti, Yiannis Fiamegos, Catalina Dumitrascu, Maria Beatriz de la Calle
Summary: The study classified 183 PDO honeys from three regions in Spain using ED-XRF elemental profiles and successfully differentiated honey without PDO from El Bierzo. Manganese content served as a discriminant marker between Liebana PDO and El Bierzo, which could also be distinguished from each other. The developed models displayed unique elemental profiles among different regions and varieties.
Article
Food Science & Technology
David Schuetz, Elisabeth Achten, Marina Creydt, Janet Riedl, Markus Fischer
Summary: This study used metabolomics combined with the Random Forest algorithm to trace back the geographical origin of 151 maize samples from seven countries, successfully classifying 90.5% of samples using 20 selected markers. The research suggests a high potential of the non-polar metabolome in identifying the geographic origin of maize samples.
Article
Food Science & Technology
Hongyan Liu, Yuchang Qin, Qing Ma, Qingyu Zhao, Xiaoqing Guo, Lina Ma, Chunlin Gou, Yu Xia, Ren-You Gan, Junmin Zhang
Summary: The study revealed significant differences in most variables of lamb samples among different regions, as well as differences in the contents of certain elements between different years and muscle sections. Significant correlations were found between delta C-13 values of defatted lamb and lipid, as well as between the element contents in lamb and soil. Four key variables were identified through canonical discriminant analysis with a high correct classification rate of 99.1%.
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Food Science & Technology
Araceli Rivera-Perez, Roberto Romero-Gonzalez, Antonia Garrido Frenich
Summary: An untargeted metabolomics approach using UHPLC-HRMS technology was applied to study metabolic differences of black pepper from different geographical origins and processing methods. PCA and OPLSDA were utilized for sample clustering and discrimination, with 8 potential differential metabolites identified. The NMR-UHPLC-GC mid-level fused model showed excellent performance in geographical and processing discrimination.
FOOD RESEARCH INTERNATIONAL
(2021)
Article
Chemistry, Applied
Cidan Zhaxi, Shanshan Zhao, Tangwei Zhang, Hao Dong, Haijin Liu, Yan Zhao
Summary: The study successfully distinguished Tibetan chickens from those in plain areas using stable isotopes and chemometric methods, achieving a cross-validation rate of 97.6%. Additionally, the research revealed a strong correlation between the isotopic values of chicken samples and environmental parameters, providing important insights for tracing the origins of chickens.
Review
Food Science & Technology
Sonia Sentellas, Javier Saurina
Summary: Cocoa and its derivative products, particularly chocolate, are highly valued for their qualities and considered as delicacies. However, there is a need for strategies to authenticate their attributes due to the risk of adulteration. Profiling and fingerprinting approaches using analytical techniques such as chromatography and mass spectrometry provide valuable information for authentication purposes. This review discusses the state of the art of cocoa and chocolate authentication, including the pros and cons of different approaches and the relevance of these methods in quality control and sample analysis.
Article
Chemistry, Physical
Imane Ellouzi, Souad El Hajjaji, Mourad Harir, Philippe Schmitt-Kopplin, Didier Robert, Larbi Laanab
Summary: New multidoped TiO2 nanomaterials with potential photochemical response were synthesized via an uncomplicated sol-gel process. The doped nanomaterials exhibited smaller crystallite size, larger surface area, and visible light absorption compared to undoped TiO2 P-25. Under visible light irradiation, the doped TiO2 nanomaterials showed 2 to 3 times higher photochemical response than TiO2 P-25, and the photocatalytic efficiency depended on the type and dosage of dopants. The synergistic effect of S, N, C, and Fe significantly influenced the crystalline structure, optical properties, pore volume, and surface area.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2023)
Article
Biochemical Research Methods
Bastian Blume, Vera Schwantes, Michael Witting, Heiko Hayen, Philippe Schmitt-Kopplin, Patrick O. Helmer, Bernhard Michalke
Summary: Parkinson's disease (PD) is characterized by the loss of dopaminergic neurons in the substantia nigra pars compacta region of the brain. The cause and mechanisms of this specific localized neurodegeneration are currently unknown. However, experimental evidence suggests a link between PD progression and imbalanced metal homeostasis, specifically involving reactive oxygen species. This study used Caenorhabditis elegans as a model organism to investigate the cellular response to imbalanced metal homeostasis associated with neurodegenerative diseases.
JOURNAL OF PROTEOME RESEARCH
(2023)
Article
Multidisciplinary Sciences
Philippe Schmitt-Kopplin, Marco Matzka, Alexander Ruf, Benedicte Menez, Hasnaa Chennaoui Aoudjehane, Mourad Harir, Marianna Lucio, Jasmine Hertzog, Norbert Hertkorn, Regis D. Gougeon, Victor Hoffmann, NancyW. Hinman, Ludovic Ferriere, Ansgar Greshake, Zelimir Gabelica, Laszlo Trif, Andrew Steele
Summary: This study reveals a wide range of organic compounds in the Tissint Mars meteorite, showing nonuniform distribution in functionality and abundance. The organics in Tissint meteorite include abundant C3-7 aliphatic branched carboxylic acids and aldehydes, olefins, and polyaromatics with and without heteroatoms, forming a homologous oxidation structural continuum. Organomagnesium compounds are highly abundant in olivine macrocrystals and melt veins, indicating specific organo-synthesis processes in close interaction with magnesium silicates and temperature stresses. The diversity and abundance of complex molecules suggest heterogeneity in organic speciation within the martian mantle and crust over geological time.
Article
Food Science & Technology
Christian Coelho, Cecile Bord, Karine Fayolle, Cindy Bibang, Stephanie Flahaut
Summary: The potential use of Gentiana lutea rhizomes as a flavoring agent in goat cheese production was evaluated. The addition of Gentiana lutea rhizomes resulted in flavored goat cheeses with more complex aromas and flavors, and a reduction in goaty perceptions.
Article
Plant Sciences
Sophie Trouvelot, Christelle Lemaitre-Guillier, Julie Vallet, Lucile Jacquens, Antonin Douillet, Mourad Harir, Philippe Larignon, Chloe Roullier-Gall, Philippe Schmitt-Kopplin, Marielle Adrian, Florence Fontaine
Summary: In the past, grapevine trunk diseases (GTDs) were controlled by treatments with sodium arsenite, but due to its banning, effective methods for GTDs management are lacking. This study investigates the effect of sodium arsenite on woody tissues, revealing its impact on both plant metabolome and structural barriers. The findings suggest that sodium arsenite stimulates plant secondary metabolites in wood, enhancing its fungicide effect and influencing phytotoxin patterns. This study contributes to a better understanding of the mode of action of sodium arsenite, aiding the development of sustainable strategies for GTDs management.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Minako Hashiguchi, Dan Aoki, Kazuhiko Fukushima, Hiroshi Naraoka, Yoshinori Takano, Jason P. Dworkin, Karin E. Dworkin, Jose C. Aponte, Jamie E. Elsila, John M. Eiler, Yoshihiro Furukawa, Aogu Furusho, Daniel P. Glavin, Heather V. Graham, Kenji Hamase, Norbert Hertkorn, Junko Isa, Toshiki Koga, Hannah L. McLain, Hajime Mita, Yasuhiro Oba, Nanako O. Ogawa, Naohiko Ohkouchi, Francois-Regis Orthous-Daunay, Eric T. Parker, Alexander Ruf, Saburo Sakai, Philippe Schmitt-Kopplin, Haruna Sugahara, Roland Thissen, Veronique Vuitton, Cedric Wolters, Toshihiro Yoshimura, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Kanako Sakamoto, Shogo Tachibana, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Sei-ichiro Watanabe, Yuichi Tsuda
Summary: We performed in-situ analysis on a 1 mm-sized grain A0080 returned by Hayabusa2 spacecraft to investigate the relationship of soluble organic matter (SOM) to minerals. The distribution of different compound classes of SOM and alkylated homologues exhibited a heterogeneous spatial distribution on the sample surface. The A0080 sample showed mineralogy similar to an Ivuna-type carbonaceous chondrite and contained two different lithologies. CHN compounds were more concentrated in one lithology, while CHO, CHO-Na, and CHNO compounds were distributed in both lithologies. The spatial distribution of SOM is likely influenced by interactions with minerals and fluid activity.
EARTH PLANETS AND SPACE
(2023)
Article
Genetics & Heredity
Yongtao Han, Amira Haouel, Elisabeth Georgii, Santiago Priego-Cubero, Christoph J. Wurm, Daniel Hemmler, Philippe Schmitt-Kopplin, Claude Becker, Joerg Durner, Christian Lindermayr
Summary: Histone deacetylation by HD2A and HD2B regulates gene expression and ABA biosynthesis, leading to enhanced drought resistance in Arabidopsis. The hd2ahd2b mutant displays hypersensitivity to exogenous ABA and shows upregulation of ABA-responsive genes and H4K5ac levels. HD2A/HD2B directly bind to specific ABA-responsive genes and repress ABA biosynthesis by deacetylating H4K5ac at NCED9. These findings highlight the important role of HD2A and HD2B in ABA signaling and their negative regulation in drought resistance.
Article
Plant Sciences
Olivier Fernandez, Christelle Lemaitre-Guillier, Aurelie Songy, Guillaume Robert-Siegwald, Marc-Henri Lebrun, Philippe Schmitt-Kopplin, Philippe Larignon, Marielle Adrian, Florence Fontaine
Summary: Grapevine trunk diseases pose a global threat to vineyards. These diseases are caused by multiple pathogenic microorganisms and have a long latent phase. Combined abiotic stresses exacerbate disease symptoms, especially with less virulent pathogens.
Article
Chemistry, Multidisciplinary
Philippe Diederich, Thomas Geisberger, Yingfei Yan, Christian Seitz, Alexander Ruf, Claudia Huber, Norbert Hertkorn, Philippe Schmitt-Kopplin
Summary: The authors report the formation of acetaldehydes and higher condensation products from a reaction between acetylene and carbon monoxide catalyzed by nickel sulfide under hydrothermal conditions. This finding is important for understanding the synthesis of aldehydes in the early Earth.
COMMUNICATIONS CHEMISTRY
(2023)
Article
Archaeology
Jasmine Hertzog, Hitomi Fujii, Rugile Zostautaite, Agnes Lattuati-Derieux, Pascale Richardin, Vincent Carre, Frederic Aubriet, Philippe Schmitt-Kopplin
Summary: Deciphering the biomolecular composition of archaeological organic materials is important for understanding ancient civilizations. This study used FTICR MS in combination with GC-MS and infrared spectroscopy to analyze embalming materials from Egyptian crocodile mummies. FTICR MS provided complementary information and advantages over GC-MS, such as easier sample preparation and detection of higher-mass compounds. The results confirmed the use of pine resin, beeswax, and animal and vegetal fat in the embalming process, and also assessed the oxidation of the samples. FTICR MS is a valuable tool for quickly analyzing biomolecular fingerprints and assessing sample degradation in archaeological materials.
JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS
(2023)
Article
Environmental Sciences
Siyu Li, Mourad Harir, Philippe Schmitt-Kopplin, Fausto Machado-Silva, Michael Gonsior, David Bastviken, Alex Enrich-Prast, Juliana Valle, Norbert Hertkorn
Summary: Positive and negative electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry and H-1 NMR were used to investigate the compositional and structural changes of dissolved organic matter (DOM) at Amazon confluence sites. Major structural transformations were observed in the case of mixing water from the Solimoes and Negro Rivers (S + N), while minor alterations were found in the case of mixing water from the Amazon and Tapajo's Rivers (A + T). The results also showed that the structural changes were dependent on incubation time, with reversing alterations observed after 1-day to 5-day incubation.
Article
Multidisciplinary Sciences
Toshihiro Yoshimura, Yoshinori Takano, Hiroshi Naraoka, Toshiki Koga, Daisuke Araoka, Nanako O. Ogawa, Philippe Schmitt-Kopplin, Norbert Hertkorn, Yasuhiro Oba, Jason P. Dworkin, Jose C. Aponte, Takaaki Yoshikawa, Satoru Tanaka, Naohiko Ohkouchi, Minako Hashiguchi, Hannah Mclain, Eric T. Parker, Saburo Sakai, Mihoko Yamaguchi, Takahiro Suzuki, Tetsuya Yokoyama, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Kanako Sakamoto, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Sei-ichiro Watanabe, Yuichi Tsuda, Shogo Tachibana, Kenji Hamase, Aogu Furusho, Kazuhiko Fukushima, Dan Aoki, Daniel P. Glavin, Hannah L. Mclain, Jamie E. Elsila, Heather V. Graham, John M. Eiler, Alexander Ruf, Francois-Regis Orthous-Daunay, Cedric Wolters, Junko Isa, Mayu Morita, Veronique Vuitton, Roland Thissen, Shin-ichiro M. Nomura, Haruna Sugahara, Hajime Mita, Yoshihiro Furukawa, Yoshito Chikaraishi, Morihiko Onose, Fumie Kabashima, Kosuke Fujishima, Hajime Sato, Kazunori Sasaki, Kuniyuki Kano, Junken Aoki, Tomoya Yamazaki, Yuki Kimura
Summary: Samples from asteroid Ryugu provide insights into the chemical evolution of organic molecules in the early solar system. The presence of sulfur-bearing soluble compounds suggests their role in the molecular evolution of prebiotic organic material.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Philippe Diederich, Alexander Ruf, Thomas Geisberger, Leopold Weidner, Christian Seitz, Wolfgang Eisenreich, Claudia Huber, Philippe Schmitt-Kopplin
Summary: Chemical complexity is crucial for the origin of life and biological evolution. The chemical evolution of a complex prebiotic mixture containing acetylene, carbon monoxide, and nickel sulfide has been analyzed using mass spectrometry. Isotopic labeling reveals the presence of diverse compounds within the reaction mixture. Different degrees of labeling enable robust characterization of functional groups. The study also reveals a characteristic addition pattern and a high diversity of sulfur-containing compounds. The temporal analysis provides insights into the role of sulfur in the origin of life.
COMMUNICATIONS CHEMISTRY
(2023)
Article
Endocrinology & Metabolism
Liesa Salzer, Philippe Schmitt-Kopplin, Michael Witting
Summary: This study compared the application of capillary electrophoresis coupled to mass spectrometry (CE-MS) and hydrophilic interaction liquid chromatography coupled to mass spectrometry (HILIC-MS) for the analysis of polar metabolites in C. elegans. The results showed that CE-MS exhibited better performance in terms of separation, peak width, and linearity, and provided complementary information compared to HILIC-MS. CE-MS was successfully applied to recover known metabolites and identify novel putative biomarkers of longevity in C. elegans.
Article
Biochemical Research Methods
Leopold Weidner, Daniel Hemmler, Michael Rychlik, Philippe Schmitt-Kopplin
Summary: We developed DBDIpy, a Python library for processing and analyzing untargeted, time-sensitive plasma ionization MS datasets. It is capable of identifying in-source fragments and rivaling ionization pathways of the same analytes in time-sensitive datasets. DBDIpy also includes basic functions for processing untargeted metabolomics data and interfaces to existing tools for MS data analysis in Python.
Article
Chemistry, Applied
M. Graca Dias, Elsa Vasco, Francisco Ravasco, Lufsa Oliveira
Summary: This study estimated the vitamin D intake of "adults" and "elderly" populations in Portugal using the TDS methodology. The results showed that the majority of people had inadequate vitamin D intake, well below the Dietary Reference Values.
Article
Chemistry, Applied
Yanan Wang, Jiachen Shi, Yong-Jiang Xu, Chin-Ping Tan, Yuanfa Liu
Summary: This study investigates the variations in lipid digestion profiles among individuals of different ages using in vitro digestion models. The findings suggest that adults have a more comprehensive lipid digestion compared to infants, and infants tend to release shorter chain length and more saturated free fatty acids during digestion. Additionally, the particle sizes in the stomach of the elderly were consistently larger. This study enhances our understanding of how lipids with different degrees of unsaturation undergo digestion in diverse age groups.
Article
Chemistry, Applied
Hyunjong Yu, Huisu Kim, Pahn-Shick Chang
Summary: Chitosan-pectin emulsion-filled hydrogel (EFH) was developed to enhance the bioaccessibility of lipophilic bioactive compounds through intestinal delivery. The EFH, prepared without crosslinking agents, demonstrated improved mechanical strength and compactness with higher pectin concentration. It retained the emulsion at pH 2.0 and released it at pH 7.4, resulting in enhanced release of free fatty acids and improved bioaccessibility of curcumin.
Article
Chemistry, Applied
Tongze Zhang, Siqi Hong, Jia-Rong Zhang, Pin-He Liu, Siyi Li, Zixian Wen, Jianwei Xiao, Guirong Zhang, Olivier Habimana, Nagendra P. Shah, Zhongquan Sui, Harold Corke
Summary: Lactic acid fermentation significantly affects the morphology and physicochemical properties of proso millet starch, including the formation of surface indentations and small pores, decrease in gelatinization temperatures, and changes in hardness and adhesiveness.
Article
Chemistry, Applied
Liqin Kong, Feng Hong, Peng Luan, Yiping Chen, Yaoze Feng, Ming Zhu
Summary: This study presents a novel impedance biosensor using composite nanomaterials and T1R1 as a signal probe, which can competitively and ultra-sensitively detect umami intensity. The biosensor exhibits exceptional analytical performance and is suitable for food flavor evaluation.
Article
Chemistry, Applied
Kunying Lv, Yixin Yang, Qilong Li, Ran Chen, Liang Deng, Yiwei Zhang, Ning Jiang
Summary: Horse's milk, with its high nutritional value and low allergenic proteins, could be a substitute for cow's milk in infant consumption. A proteomic method was used to identify and compare milk fat globule membrane (MFGM) and whey proteins from different horse breeds. The study found differences in protein composition and functionality, which could support the development of formulas more suitable for human infants.
Article
Chemistry, Applied
Enrique Jacobo Diaz-Montana, Helene Brignot, Ramon Aparicio-Ruiz, Thierry Thomas- Danguin, Maria Teresa Morales
Summary: Sensory perception of virgin olive oil is influenced by phenols and volatiles, which are affected by the composition of the oil and biological factors. This study investigated the effect of saliva and phenols on the release of volatiles, and found that the presence of phenols decreased the release of saturated volatiles.
Article
Chemistry, Applied
Wei Zhou, Rui Zhang, Zhen Cai, Fangfang Wu, Yong Hu, Chao Huang, Kun Hu, Yun Chen
Summary: Environmentally friendly and outstanding pH-responsive cationic starch nanoparticles (CSNP) were prepared from pH-sensitive starch. CSNP exhibited nanosize and regular sphere, highly free-flowing molecular chains, and demonstrated excellent pH responsiveness through multiple emulsion/demulsification transitions.
Article
Chemistry, Applied
Andrea Koo, Vinayak Ghate, Weibiao Zhou
Summary: This study suggests that direct seeding may negatively affect the nutritional quality of crops, causing a decrease in ascorbic acid, vitamin K, and total glucosinolate content.
Article
Chemistry, Applied
Tonghao Du, Yazhou Xu, Xiaoyan Xu, Shijin Xiong, Linli Zhang, Biao Dong, Jinqing Huang, Tao Huang, Muyan Xiao, Tao Xiong, Mingyong Xie
Summary: This study successfully improved the ACE inhibitory activity of black sesame seeds by fermenting them with Lactobacillus Plantarum NCU116 and hydrolyzing them using acid protease. The RF-PSO model was used to predict the ACE inhibitory activity during the hydrolysis process. Eight peptides with ACE inhibitory activity were identified from fermented black sesame seed hydrolysates after separation and screening.
Article
Chemistry, Applied
Yao Liu, Songyi Lin, Kexin Liu, Shan Wang, Qiaozhen Liu, Na Sun
Summary: This study analyzed the structural changes of shrimp proteins during digestion, predicted the immunodominant epitopes, and validated their allergenicity. The results showed that shrimp proteins were degraded into peptides during digestion, but still carried IgE epitopes that trigger allergic reactions.
Article
Chemistry, Applied
Tiantian Fu, Hongwei Cao, Yu Zhang, Xiao Guan
Summary: This study investigates the impact of milling on the active components in rice, with a focus on the stability and bioaccessibility of phenols, VB1, and alpha-GABA during cooking and digestion. The findings show that milling exacerbates the instability of gamma-GABA during cooking and VB1 during digestion, and it affects the bioaccessibility of these active compounds.
Article
Chemistry, Applied
Zhihao Yang, Yanru Hou, Min Zhang, Puxin Hou, Chang Liu, Lu Dou, Xiaoyu Chen, Lihua Zhao, Lin Su, Ye Jin
Summary: This study investigated the molecular mechanism of feeding regimes on lamb flavor by using TMT labeling combined with MS. The results showed that pasture-fed groups had higher levels of amino acids and volatile flavor substances compared to concentrate-fed groups. Additionally, several differentially abundant proteins associated with lamb flavor were identified.
Article
Chemistry, Applied
Zixuan Xie, De Zhang, Junyu Zhu, Qianqian Luo, Jun Liu, Jingtao Zhou, Xiaoyong Wang, Yuqiong Chen, Zhi Yu, Dejiang Ni
Summary: This study investigated the acidification of aroma-enhanced black tea during storage. Analysis of non-volatile substances and organic acids using UPLC-Q-TOF/MS and HPLC revealed a decrease in soluble sugars and amino acids, while an increase in organic acids such as oxalic acid, malic acid, and quinic acid. In vitro experiments further demonstrated that the acidification is a result of the decomposition of sugars and amino acids by heating, as well as the oxidation of aromatic aldehydes. Additionally, the study showed that the taste composition of tea infusion is altered, with reduced amino acids, catechins, soluble sugars, and flavonoids. This research provides a theoretical basis for improving the quality of black tea.
Article
Chemistry, Applied
Lin Wang, Falai Ma, Zihan Li, Yan Zhang
Summary: This study developed time-temperature integrators based on amyloglucosidase@Cu3(PO4)2 nanoflowers for monitoring the freshness of chilled pork. The results showed that the integrators were highly reliable and accurate in predicting the quality of chilled pork.
